Colorists to the stars tell us which blondes, brunettes, redheads and raven-haired ladies in Hollywood have the most beautiful hair color -- and how you can copy it

Why it works:
"Their natural color is a little darker and they don't try to stray too far away from that," says John. This blonde color works well for them because it pulls out the pink tones in their skin and makes it radiant and "their hair is a little longer, allowing the highlights to look natural and beautiful," says Cunningham.